Merge pull request #285 from lnis-uofu/fabric_bitstream_writer
Fabric bitstream writer supports multiple regions
This commit is contained in:
tangxifan
GitHub
commit
b4c03bce49
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@ -19,11 +19,31 @@ The information depends on the type of configuration procotol.
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.. option:: scan_chain
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A line consisting of ``0`` | ``1``
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Multiple lines consisting of ``0`` | ``1``
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For example, a bitstream for 1 configuration regions:
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.. code-block:: xml
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0
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1
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0
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0
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For example, a bitstream for 4 configuration regions:
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.. code-block:: xml
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0000
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1010
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0110
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0120
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.. note:: When there are multiple configuration regions, each line may consist of multiple bits. For example, ``0110`` represents the bits for 4 configuration regions, where the 4 digits correspond to the bits from region ``0, 1, 2, 3`` respectively.
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.. option:: memory_bank
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Multiple lines will be included, each of which is organized as <address><space><bit>.
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Multiple lines will be included, each of which is organized as <address><space><bits>.
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Note that due to the use of Bit-Line and Word-Line decoders, every two lines are paired.
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The first line represents the Bit-Line address and configuration bit.
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The second line represents the Word-Line address and configuration bit.
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@ -39,11 +59,15 @@ The information depends on the type of configuration procotol.
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<bitline_address> <bit_value>
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<wordline_address> <bit_value>
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.. note:: When there are multiple configuration regions, each ``<bit_value>`` may consist of multiple bits. For example, ``0110`` represents the bits for 4 configuration regions, where the 4 digits correspond to the bits from region ``0, 1, 2, 3`` respectively.
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.. option:: frame_based
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Multiple lines will be included, each of which is organized as <address><space><bit>.
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Multiple lines will be included, each of which is organized as <address><space><bits>.
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Note that the address may include don't care bit which is denoted as ``x``.
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OpenFPGA automatically convert don't care bit to logic ``0`` when generating testbenches.
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.. note:: OpenFPGA automatically convert don't care bit to logic ``0`` when generating testbenches.
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For example
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.. code-block:: xml
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@ -53,6 +77,7 @@ The information depends on the type of configuration procotol.
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...
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<frame_address> <bit_value>
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.. note:: When there are multiple configuration regions, each ``<bit_value>`` may consist of multiple bits. For example, ``0110`` represents the bits for 4 configuration regions, where the 4 digits correspond to the bits from region ``0, 1, 2, 3`` respectively.
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.. _file_formats_fabric_bitstream_xml:
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@ -61,7 +86,21 @@ XML (.xml)
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This file format is designed to generate testbenches using external tools, e.g., CocoTB.
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In principle, the file consist a number of XML node ``<bit>``, each bit contains the following attributes:
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In principle, the file consist a number of XML node ``<region>``, each region has a unique id, and contains a number of XML nodes ``<bit>``.
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- ``id``: The unique id of a configuration region in the fabric bitstream.
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A quick example:
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.. code-block:: xml
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<region id="0">
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<bit id="0" value="1" path="fpga_top.grid_clb_1__2_.logical_tile_clb_mode_clb__0.mem_fle_9_in_5.mem_out[0]"/>
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</bit>
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</region>
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Each XML node ``<bit>`` contains the following attributes:
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- ``id``: The unique id of the configuration bit in the fabric bitstream.
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@ -17,6 +17,7 @@
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#include "openfpga_naming.h"
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#include "bitstream_manager_utils.h"
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#include "fabric_bitstream_utils.h"
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#include "write_text_fabric_bitstream.h"
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/* begin namespace openfpga */
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@ -80,6 +81,124 @@ int write_fabric_config_bit_to_text_file(std::fstream& fp,
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return 0;
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}
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/********************************************************************
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* Write the flatten fabric bitstream to a plain text file
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*
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* Return:
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* - 0 if succeed
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* - 1 if critical errors occured
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*******************************************************************/
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static
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int write_flatten_fabric_bitstream_to_text_file(std::fstream& fp,
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const BitstreamManager& bitstream_manager,
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const FabricBitstream& fabric_bitstream,
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const ConfigProtocol& config_protocol) {
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int status = 0;
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for (const FabricBitId& fabric_bit : fabric_bitstream.bits()) {
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status = write_fabric_config_bit_to_text_file(fp, bitstream_manager,
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fabric_bitstream,
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fabric_bit,
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config_protocol.type());
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if (1 == status) {
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return status;
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}
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}
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return status;
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}
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/********************************************************************
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* Write the fabric bitstream fitting a configuration chain protocol
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* to a plain text file
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*
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* Return:
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* - 0 if succeed
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* - 1 if critical errors occured
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*******************************************************************/
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static
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int write_config_chain_fabric_bitstream_to_text_file(std::fstream& fp,
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const BitstreamManager& bitstream_manager,
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const FabricBitstream& fabric_bitstream) {
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int status = 0;
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size_t regional_bitstream_max_size = find_fabric_regional_bitstream_max_size(fabric_bitstream);
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ConfigChainFabricBitstream regional_bitstreams = build_config_chain_fabric_bitstream_by_region(bitstream_manager, fabric_bitstream);
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for (size_t ibit = 0; ibit < regional_bitstream_max_size; ++ibit) {
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for (const auto& region_bitstream : regional_bitstreams) {
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fp << region_bitstream[ibit];
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}
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fp << std::endl;
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}
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return status;
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}
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/********************************************************************
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* Write the fabric bitstream fitting a memory bank protocol
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* to a plain text file
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*
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* Return:
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* - 0 if succeed
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* - 1 if critical errors occured
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*******************************************************************/
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static
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int write_memory_bank_fabric_bitstream_to_text_file(std::fstream& fp,
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const FabricBitstream& fabric_bitstream) {
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int status = 0;
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MemoryBankFabricBitstream fabric_bits_by_addr = build_memory_bank_fabric_bitstream_by_address(fabric_bitstream);
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for (const auto& addr_din_pair : fabric_bits_by_addr) {
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/* Write BL address code */
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fp << addr_din_pair.first.first;
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fp << " ";
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/* Write WL address code */
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fp << addr_din_pair.first.second;
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fp << " ";
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/* Write data input */
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for (const bool& din_value : addr_din_pair.second) {
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fp << din_value;
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}
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fp << std::endl;
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}
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return status;
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}
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/********************************************************************
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* Write the fabric bitstream fitting a frame-based protocol
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* to a plain text file
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*
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* Return:
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* - 0 if succeed
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* - 1 if critical errors occured
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*******************************************************************/
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static
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int write_frame_based_fabric_bitstream_to_text_file(std::fstream& fp,
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const FabricBitstream& fabric_bitstream) {
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int status = 0;
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FrameFabricBitstream fabric_bits_by_addr = build_frame_based_fabric_bitstream_by_address(fabric_bitstream);
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for (const auto& addr_din_pair : fabric_bits_by_addr) {
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/* Write address code */
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fp << addr_din_pair.first;
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fp << " ";
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/* Write data input */
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for (const bool& din_value : addr_din_pair.second) {
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fp << din_value;
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}
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fp << std::endl;
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}
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return status;
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}
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/********************************************************************
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* Write the fabric bitstream to a plain text file
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* Notes:
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@ -113,15 +232,33 @@ int write_fabric_bitstream_to_text_file(const BitstreamManager& bitstream_manage
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/* Output fabric bitstream to the file */
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int status = 0;
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for (const FabricBitId& fabric_bit : fabric_bitstream.bits()) {
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status = write_fabric_config_bit_to_text_file(fp, bitstream_manager,
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fabric_bitstream,
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fabric_bit,
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config_protocol.type());
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if (1 == status) {
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break;
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}
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switch (config_protocol.type()) {
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case CONFIG_MEM_STANDALONE:
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status = write_flatten_fabric_bitstream_to_text_file(fp,
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bitstream_manager,
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fabric_bitstream,
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config_protocol);
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break;
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case CONFIG_MEM_SCAN_CHAIN:
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status = write_config_chain_fabric_bitstream_to_text_file(fp,
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bitstream_manager,
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fabric_bitstream);
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break;
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case CONFIG_MEM_MEMORY_BANK:
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status = write_memory_bank_fabric_bitstream_to_text_file(fp,
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fabric_bitstream);
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break;
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case CONFIG_MEM_FRAME_BASED:
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status = write_frame_based_fabric_bitstream_to_text_file(fp,
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fabric_bitstream);
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break;
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default:
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VTR_LOGF_ERROR(__FILE__, __LINE__,
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"Invalid configuration protocol type!\n");
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status = 1;
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}
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/* Print an end to the file here */
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fp << std::endl;
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@ -71,12 +71,13 @@ int write_fabric_config_bit_to_xml_file(std::fstream& fp,
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const BitstreamManager& bitstream_manager,
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const FabricBitstream& fabric_bitstream,
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const FabricBitId& fabric_bit,
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const e_config_protocol_type& config_type) {
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const e_config_protocol_type& config_type,
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const int& xml_hierarchy_depth) {
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if (false == valid_file_stream(fp)) {
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return 1;
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}
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write_tab_to_file(fp, 1);
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write_tab_to_file(fp, xml_hierarchy_depth);
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fp << "<bit id=\"" << size_t(fabric_bit) << "\"";
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fp << " value=\"";
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fp << bitstream_manager.bit_value(fabric_bitstream.config_bit(fabric_bit));
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@ -104,14 +105,14 @@ int write_fabric_config_bit_to_xml_file(std::fstream& fp,
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break;
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case CONFIG_MEM_MEMORY_BANK: {
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/* Bit line address */
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write_tab_to_file(fp, 2);
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write_tab_to_file(fp, xml_hierarchy_depth + 1);
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fp << "<bl address=\"";
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for (const char& addr_bit : fabric_bitstream.bit_bl_address(fabric_bit)) {
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fp << addr_bit;
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}
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fp << "\"/>\n";
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write_tab_to_file(fp, 2);
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write_tab_to_file(fp, xml_hierarchy_depth + 1);
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fp << "<wl address=\"";
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for (const char& addr_bit : fabric_bitstream.bit_wl_address(fabric_bit)) {
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fp << addr_bit;
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@ -120,7 +121,7 @@ int write_fabric_config_bit_to_xml_file(std::fstream& fp,
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break;
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}
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case CONFIG_MEM_FRAME_BASED: {
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write_tab_to_file(fp, 2);
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write_tab_to_file(fp, xml_hierarchy_depth + 1);
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fp << "<frame address=\"";
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for (const char& addr_bit : fabric_bitstream.bit_address(fabric_bit)) {
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fp << addr_bit;
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@ -134,12 +135,56 @@ int write_fabric_config_bit_to_xml_file(std::fstream& fp,
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return 1;
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}
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write_tab_to_file(fp, 1);
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write_tab_to_file(fp, xml_hierarchy_depth);
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fp << "</bit>\n";
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return 0;
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}
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/********************************************************************
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* Write the fabric bitstream in a specific configuration region to an XML file
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*
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* Return:
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* - 0 if succeed
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* - 1 if critical errors occured
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*******************************************************************/
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static
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int write_fabric_regional_config_bit_to_xml_file(std::fstream& fp,
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const BitstreamManager& bitstream_manager,
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const FabricBitstream& fabric_bitstream,
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const FabricBitRegionId& fabric_region,
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const e_config_protocol_type& config_type,
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const int& xml_hierarchy_depth) {
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if (false == valid_file_stream(fp)) {
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return 1;
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}
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int status = 0;
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write_tab_to_file(fp, xml_hierarchy_depth);
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fp << "<region ";
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fp << "id=\"";
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fp << size_t(fabric_region);
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fp << "\"";
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fp << ">\n";
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for (const FabricBitId& fabric_bit : fabric_bitstream.region_bits(fabric_region)) {
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status = write_fabric_config_bit_to_xml_file(fp, bitstream_manager,
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fabric_bitstream,
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fabric_bit,
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config_type,
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xml_hierarchy_depth + 1);
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if (1 == status) {
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return status;
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}
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}
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write_tab_to_file(fp, xml_hierarchy_depth);
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fp << "</region>\n";
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return status;
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}
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/********************************************************************
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* Write the fabric bitstream to an XML file
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* Notes:
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@ -173,15 +218,17 @@ int write_fabric_bitstream_to_xml_file(const BitstreamManager& bitstream_manager
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/* Write XML head */
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write_fabric_bitstream_xml_file_head(fp);
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int xml_hierarchy_depth = 0;
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fp << "<fabric_bitstream>\n";
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/* Output fabric bitstream to the file */
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int status = 0;
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for (const FabricBitId& fabric_bit : fabric_bitstream.bits()) {
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status = write_fabric_config_bit_to_xml_file(fp, bitstream_manager,
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fabric_bitstream,
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fabric_bit,
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config_protocol.type());
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for (const FabricBitRegionId& region : fabric_bitstream.regions()) {
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status = write_fabric_regional_config_bit_to_xml_file(fp, bitstream_manager,
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fabric_bitstream,
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region,
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config_protocol.type(),
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xml_hierarchy_depth + 1);
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if (1 == status) {
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break;
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}
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@ -1484,24 +1484,7 @@ void print_verilog_top_testbench_configuration_chain_bitstream(std::fstream& fp,
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VTR_ASSERT(num_bits_to_skip < regional_bitstream_max_size);
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/* Reorganize the regional bitstreams to be the same size */
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std::vector<std::vector<bool>> regional_bitstreams;
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regional_bitstreams.reserve(fabric_bitstream.regions().size());
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for (const FabricBitRegionId& region : fabric_bitstream.regions()) {
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std::vector<bool> curr_regional_bitstream;
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curr_regional_bitstream.resize(regional_bitstream_max_size, false);
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/* Starting index should consider the offset between the current bitstream size and
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* the maximum size of regional bitstream
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*/
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size_t offset = regional_bitstream_max_size - fabric_bitstream.region_bits(region).size();
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for (const FabricBitId& bit_id : fabric_bitstream.region_bits(region)) {
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curr_regional_bitstream[offset] = bitstream_manager.bit_value(fabric_bitstream.config_bit(bit_id));
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offset++;
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}
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VTR_ASSERT(offset == regional_bitstream_max_size);
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/* Add the adapt sub-bitstream */
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regional_bitstreams.push_back(curr_regional_bitstream);
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}
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ConfigChainFabricBitstream regional_bitstreams = build_config_chain_fabric_bitstream_by_region(bitstream_manager, fabric_bitstream);
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/* Attention: when the fast configuration is enabled, we will start from the first bit '1'
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* This requires a reset signal (as we forced in the first clock cycle)
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@ -1602,7 +1585,7 @@ void print_verilog_top_testbench_memory_bank_bitstream(std::fstream& fp,
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fp << std::endl;
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/* Reorganize the fabric bitstream by the same address across regions */
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std::map<std::pair<std::string, std::string>, std::vector<bool>> fabric_bits_by_addr = build_memory_bank_fabric_bitstream_by_address(fabric_bitstream);
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MemoryBankFabricBitstream fabric_bits_by_addr = build_memory_bank_fabric_bitstream_by_address(fabric_bitstream);
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for (const auto& addr_din_pair : fabric_bits_by_addr) {
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/* When fast configuration is enabled,
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@ -1711,7 +1694,7 @@ void print_verilog_top_testbench_frame_decoder_bitstream(std::fstream& fp,
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fp << std::endl;
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/* Reorganize the fabric bitstream by the same address across regions */
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std::map<std::string, std::vector<bool>> fabric_bits_by_addr = build_frame_based_fabric_bitstream_by_address(fabric_bitstream);
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FrameFabricBitstream fabric_bits_by_addr = build_frame_based_fabric_bitstream_by_address(fabric_bitstream);
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for (const auto& addr_din_pair : fabric_bits_by_addr) {
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/* When fast configuration is enabled,
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@ -67,6 +67,43 @@ size_t find_configuration_chain_fabric_bitstream_size_to_be_skipped(const Fabric
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return num_bits_to_skip;
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}
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/********************************************************************
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* Build a fabric bitstream which can be directly loaded to a configuration
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* chain (either single-head or multi-bit)
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* We will organize the bitstreams in each region and align them
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* Logic '0' bits may be deposited to those bitstream whose length is smaller
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* than the maximum bitstream among all the regions
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* For example:
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* Region 0: 000000001111101010 <- max. bitstream length
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* Region 1: 00000011010101 <- shorter bitstream than the max.; add zeros to the head
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* Region 2: 0010101111000110 <- shorter bitstream than the max.; add zeros to the head
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*******************************************************************/
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ConfigChainFabricBitstream build_config_chain_fabric_bitstream_by_region(const BitstreamManager& bitstream_manager,
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const FabricBitstream& fabric_bitstream) {
|
||||
/* Find the longest bitstream */
|
||||
size_t regional_bitstream_max_size = find_fabric_regional_bitstream_max_size(fabric_bitstream);
|
||||
|
||||
ConfigChainFabricBitstream regional_bitstreams;
|
||||
regional_bitstreams.reserve(fabric_bitstream.regions().size());
|
||||
for (const FabricBitRegionId& region : fabric_bitstream.regions()) {
|
||||
std::vector<bool> curr_regional_bitstream;
|
||||
curr_regional_bitstream.resize(regional_bitstream_max_size, false);
|
||||
/* Starting index should consider the offset between the current bitstream size and
|
||||
* the maximum size of regional bitstream
|
||||
*/
|
||||
size_t offset = regional_bitstream_max_size - fabric_bitstream.region_bits(region).size();
|
||||
for (const FabricBitId& bit_id : fabric_bitstream.region_bits(region)) {
|
||||
curr_regional_bitstream[offset] = bitstream_manager.bit_value(fabric_bitstream.config_bit(bit_id));
|
||||
offset++;
|
||||
}
|
||||
VTR_ASSERT(offset == regional_bitstream_max_size);
|
||||
|
||||
/* Add the adapt sub-bitstream */
|
||||
regional_bitstreams.push_back(curr_regional_bitstream);
|
||||
}
|
||||
return regional_bitstreams;
|
||||
}
|
||||
|
||||
/********************************************************************
|
||||
* Reorganize the fabric bitstream for frame-based protocol
|
||||
* by the same address across regions:
|
||||
|
|
@ -78,8 +115,8 @@ size_t find_configuration_chain_fabric_bitstream_size_to_be_skipped(const Fabric
|
|||
*
|
||||
* Note: the std::map may cause large memory footprint for large bitstream databases!
|
||||
*******************************************************************/
|
||||
std::map<std::string, std::vector<bool>> build_frame_based_fabric_bitstream_by_address(const FabricBitstream& fabric_bitstream) {
|
||||
std::map<std::string, std::vector<bool>> fabric_bits_by_addr;
|
||||
FrameFabricBitstream build_frame_based_fabric_bitstream_by_address(const FabricBitstream& fabric_bitstream) {
|
||||
FrameFabricBitstream fabric_bits_by_addr;
|
||||
for (const FabricBitRegionId& region : fabric_bitstream.regions()) {
|
||||
for (const FabricBitId& bit_id : fabric_bitstream.region_bits(region)) {
|
||||
/* Create string for address */
|
||||
|
|
@ -129,7 +166,7 @@ std::map<std::string, std::vector<bool>> build_frame_based_fabric_bitstream_by_a
|
|||
*******************************************************************/
|
||||
size_t find_frame_based_fast_configuration_fabric_bitstream_size(const FabricBitstream& fabric_bitstream,
|
||||
const bool& bit_value_to_skip) {
|
||||
std::map<std::string, std::vector<bool>> fabric_bits_by_addr = build_frame_based_fabric_bitstream_by_address(fabric_bitstream);
|
||||
FrameFabricBitstream fabric_bits_by_addr = build_frame_based_fabric_bitstream_by_address(fabric_bitstream);
|
||||
|
||||
size_t num_bits = 0;
|
||||
|
||||
|
|
@ -161,8 +198,8 @@ size_t find_frame_based_fast_configuration_fabric_bitstream_size(const FabricBit
|
|||
*
|
||||
* Note: the std::map may cause large memory footprint for large bitstream databases!
|
||||
*******************************************************************/
|
||||
std::map<std::pair<std::string, std::string>, std::vector<bool>> build_memory_bank_fabric_bitstream_by_address(const FabricBitstream& fabric_bitstream) {
|
||||
std::map<std::pair<std::string, std::string>, std::vector<bool>> fabric_bits_by_addr;
|
||||
MemoryBankFabricBitstream build_memory_bank_fabric_bitstream_by_address(const FabricBitstream& fabric_bitstream) {
|
||||
MemoryBankFabricBitstream fabric_bits_by_addr;
|
||||
for (const FabricBitRegionId& region : fabric_bitstream.regions()) {
|
||||
for (const FabricBitId& bit_id : fabric_bitstream.region_bits(region)) {
|
||||
/* Create string for BL address */
|
||||
|
|
@ -217,7 +254,7 @@ std::map<std::pair<std::string, std::string>, std::vector<bool>> build_memory_ba
|
|||
*******************************************************************/
|
||||
size_t find_memory_bank_fast_configuration_fabric_bitstream_size(const FabricBitstream& fabric_bitstream,
|
||||
const bool& bit_value_to_skip) {
|
||||
std::map<std::pair<std::string, std::string>, std::vector<bool>> fabric_bits_by_addr = build_memory_bank_fabric_bitstream_by_address(fabric_bitstream);
|
||||
MemoryBankFabricBitstream fabric_bits_by_addr = build_memory_bank_fabric_bitstream_by_address(fabric_bitstream);
|
||||
|
||||
size_t num_bits = 0;
|
||||
|
||||
|
|
|
|||
|
|
@ -25,12 +25,21 @@ size_t find_configuration_chain_fabric_bitstream_size_to_be_skipped(const Fabric
|
|||
const BitstreamManager& bitstream_manager,
|
||||
const bool& bit_value_to_skip);
|
||||
|
||||
std::map<std::string, std::vector<bool>> build_frame_based_fabric_bitstream_by_address(const FabricBitstream& fabric_bitstream);
|
||||
/* Alias to a specific organization of bitstreams for frame-based configuration protocol */
|
||||
typedef std::vector<std::vector<bool>> ConfigChainFabricBitstream;
|
||||
ConfigChainFabricBitstream build_config_chain_fabric_bitstream_by_region(const BitstreamManager& bitstream_manager,
|
||||
const FabricBitstream& fabric_bitstream);
|
||||
|
||||
/* Alias to a specific organization of bitstreams for frame-based configuration protocol */
|
||||
typedef std::map<std::string, std::vector<bool>> FrameFabricBitstream;
|
||||
FrameFabricBitstream build_frame_based_fabric_bitstream_by_address(const FabricBitstream& fabric_bitstream);
|
||||
|
||||
size_t find_frame_based_fast_configuration_fabric_bitstream_size(const FabricBitstream& fabric_bitstream,
|
||||
const bool& bit_value_to_skip);
|
||||
|
||||
std::map<std::pair<std::string, std::string>, std::vector<bool>> build_memory_bank_fabric_bitstream_by_address(const FabricBitstream& fabric_bitstream);
|
||||
/* Alias to a specific organization of bitstreams for memory bank configuration protocol */
|
||||
typedef std::map<std::pair<std::string, std::string>, std::vector<bool>> MemoryBankFabricBitstream;
|
||||
MemoryBankFabricBitstream build_memory_bank_fabric_bitstream_by_address(const FabricBitstream& fabric_bitstream);
|
||||
|
||||
size_t find_memory_bank_fast_configuration_fabric_bitstream_size(const FabricBitstream& fabric_bitstream,
|
||||
const bool& bit_value_to_skip);
|
||||
|
|
|
|||
Loading…
Reference in New Issue